Brass Compression Valve 1/2\\\\\\\" Female Male; Suit for Plumbing Valve industry,Gas Valve; Hydraulic Pneumatic Field Especial for UK Market. 1). Valve is used for preventing the back-going of medium in pipelines and equipments, and the pressure of medium will bring the result of opening and closing automatically.When the medium is back-going, valve disc will automaticaly closed to avoid accidents. 2). Working Temp: 100; Working Pressure: PN10 or PN16; Suitable Media: Water,Steam,Oil ect. Not recommended for Steam. 3). Bolted cover,Two-piece or three-piece Body,Full or Reduced bore, Blowout Proof Stem Fire safe and Anti static Dual seat with injection and darin& outlet; ASTE A216WCB,A351 CF8,A351 CF8M, A351 CF3,A351 CEF3M,A351 CN7M Standards comploance.